Combined pipe-coupling and check valve or chamber



(Nd Model.) v I W. T. MESSINGER.

COMBINED PIPE COUPLING AND CHECK VALVE 0R CHAMBER. No. 383,428.

Patented May 22, 1888 is? m Inventor; P %m. Tllsai 02% UNITED STATES PATENT OFFICE.

VILLIAM T. MESSINGER, OF CAMBRIDGE, MASSACHUSETTS, ASSIGNOR TO GEORGE T. POWVER, OF CHICAGO, ILLINOIS.

COMBINED PIPE-COUPLING AND CHECK VALVE OR CHAMBER;

SPECIFICATION forming part of Letters Patent No. 383,428, dated May 22, 1888.

, Application filed May 23, 1887. Serial No. 239,000. (No model.)

To all whom it may concern:

Be it known that LWILLIAM T. MEssINGER, of Cambridge, county of Middlesex, State of Massachusetts, have invented an Improvement in a Combined Pipe-Coupling and Check Valve or Chamber, of which the following descrip tion, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention relates to a device-such, for example, as a check valve-to be used in piping; and the object of the invention is to produce a compact and efiicient coupling and valve or other device that can be'removed when required without disturbing any of the pipe-connections.

In Letters Patent No. 346,600, granted to ineAngust 3, 1886, I have shown and described a check-valve comprised in a valvecasing provided with external screw-threads at either end, and adapted to be connected with the pipe at either side by two coupling-nuts cooperating with the said screw-threads, by which construction the valvecasin'g and valve can be removed without disconnecting the piping.

In the present invention a single couplingnut is employed cooperating with a flanged coupling-piece at one end andathreaded coupling-piece at the other end; but the said nut, instead of drawing the two coupling'pieces into contact with one another or with an interposed packing-ring, as commonly practiced, is prolonged, so that the couplingpieces are separated by a considerable space,and an independent chamber is interposed between the said coupling-pieces'and inclosed within the coupling-nut, so that when the latter is unscrewed and slipped back over the flanged coupling piece the said chamber may be removed laterally from between the two coupling-pieces and subsequently replaced, without disturbing the connection of the coupling-pieces with the piping or any of the connections of the piping itself. The said chamber is made in two parts, one provided with a valve-seat and the other with a valve guide, and contains the valve which cooperates with the said seat.

Figure 1 is a side elevation of a check-valve embodying this invention,with all the parts in operative position; Fig 2, a side elevation of section of the coupling and inclosed parts;

Fig. 7, asectional view similar to Fig. 5, showing a modified construction of the two-part valvechamber adapted to operate with a valve similar to that shown in Fig. 5; and Fig. 8, an end view ofthe valve-chambershown in Fig. 7.

The device comprises two couplingpieces, a 1), adapted to be connected with piping c by screw-threads or in any other suitable or usual manner, and a coupling-nut, d, cooperating with the said coupling-pieces a b in substantially the usual manner, being provided at one end with an inwardly -pro jecting flange,'d', (best shown in Fig. 8,) co-operating with an outwardly-projecting flange, a, on the coupling-piece a, and being provided at its other end with a screw-thread, d cooperating with a screwthread, I), on the coupling-piece b. Instead, however, of operating to draw the ends of the coupling-pieces a b tightly against one another, or against an interposed washer or packing-ring, the said nutdis lengthened and 8 has a cylindrical bore between the flange 01 and threaded part dhwhich receives within a it an independent removable chamber, (2, which is interposed between the couplingpieces a b, as shown in Figs. 2 and 8, so that 90 when the coupling-nut is turned up tight the couplingpieces are jammed against the ends a of the said removable chamber, instead of against one another. The ends of the said chamber are shown as rounded where they engage the flat ends of the coupling pieces, so that a tight joint is produced by the pressure of the said coupling-piece against the ends of the chamber.

The construction of the valvechamber 6 and the inclosed valve which is believed to be best for all uses to which the valve may be l-CO put is represented in Figs. 3, 4, .5, and 6, said chamber being made in two parts, 6 e, the part 6 being provided with a valve seat, a,

(see Fig. 5,) which seat projects inward and valve f. The said ring 6* is also connected bya series of longitudinal arms or ribs, 6, with another ring, 6, and the outer surface of said arms e and rin'ge are finished to fit within the main portion e of the valve-chamber, while the inner edges of the arms 6 embrace the valvefand may assist the guide 6 in sup porting the said valve, or might, if desired,

be depended upon wholly to support and guide the valve, which can play back and forth between the seat and the spider-framed. \Vhenf the valve is unseated, asufficient passage for; the fluid is provided around theontside of'the" valve and between the arms e and c The construction of the valve proper is best shown in Fig. 5, the same consisting of a brass;

or metal body, f, having an annular groove to' receive a ring of soft or packing material, f

which maybe secured in the said groove by an annular nut -,f*, screwed upon the outside of the guide-passagef".

In putting the parts together the valve fis placed with the guide passage f 2 over the pro ,ection e and-the part e of the valve cham.-'

her then inserted in the part c, and then when the said VfllifQ-ChalllbeI is clamped between the coupling-pieces a b, as shown in Fig. 2,

there is no possibility of the valve getting out of place. V

The on'.y function of the ring a is to support the guide-ribs e, and as the guide 6 might, it'desired, be depended upon wholly to support and guide the valve, the said ring e might be omitted, or the space between the gnideribs might be filled, so that the-part e e would form a cylindrical shell, the only object in making the spaces being to reduce the amount of metal and afford a freer passage for the fluid.

The end of the chamber 6' is rounded, and the abutting portion of the ring e is flat, so

\ as to form a tight joint when the parts are pressed together.

is providedwith internal screw-threads, e,

that co operate with external screw-threaded, on the ring e of the cage or frame e that sup- "ports the guides of the valve.

The cage or frame e is composed of longitudinal arms or ribs 6", connected at one end with the ring e, and at the other end with an open frame or spider, e, that supports the valve-guide c, said cage cooperating with a valveof similar construction to that shown in Fig. 5 in substantially the same way as described in connection with Fig. 5, and differing from the valve-supporting portion e,-in

that'it issecured in the main portion a by the screw-threads e 6, instead of being clamped therein by the coupling-pieces a' b. which in the construction shown in Fig. 6

bear'agai'nst the ends of the main portion 0",

instead of hearing at one end against the said m ain'portion and at the other end against the val-ye supporting and guiding portion.

*A'ny form or material of valve may be employed which maybe best adapted to the uses and the fluids for which the valve is to be used, and any method maybe employed for guiding orcontrolling a valve to engage a valve-seat in combination with aremovable chamber and coupling nut and pieces.

I claim-- v '1 The combination of a pair of couplingpieces and a co-operating conpling -nut with aniudependent chamber inelosed within the vsaid coupliug'nnt and engaged at its ends by said cou plingpieces, being laterally removable from between said coupling-pieces without, separating them, the said chamber consisting within the said coupling-nut, the said chamber being composed of a main part, e, having an internal valve-seat, and a valve-guiding part, e, composed of a ring, e, an open frame, e a valve-guide, e, and a portion fitting within the said main portion e, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' WM. r. MESSINGER.

Witnesses:

Jos. P. LIVERMORE, r JAS. J. llIALONEY. 

